LA-4111P – HP Compaq CQ40
The LA-4111P (Compal) motherboard is found in the HP Compaq CQ40 and HP Pavilion DV4-1220US. ChambersDesignInc.com has indexed 7 files for this board — 5 BIOS files, 2 schematics and 1 boardview.
Revisions seen in file names: 1.0 and 0.4. ODM project name: JBL20. First posted in September 2017 in BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics.
BIOS dumps 5
Schematics 2
Board facts
| Board number | LA-4111P |
|---|---|
| Designed by | Compal |
| Platform group | LA-4 |
| ODM project | JBL20 |
| Revisions | 1.0, 0.4 |
| First seen | 2017-09-05 |
| Source channels | BIOS Archive, Schematics & Boardviews Archive, Cyberlan Electronics |
| About the number | Compal board numbers start with LA- for main boards and LS- for daughter boards. |
Laptops that use LA-4111P
- HP Compaq CQ40
- HP Pavilion DV4-1220US
What these files are for
A BIOS dump is a full image of the board's SPI flash chip. It is written back with an SPI programmer when the original firmware is corrupted, after a chip replacement, or to recover from a failed update. Read and save the original chip first: serial number, DMI data and the Intel ME / AMD PSP state differ between boards.
A schematic is the circuit diagram of the main board: power rails, power-up sequence, component values and net names. It is the reference for measuring voltages and tracing a fault.
A boardview is the component placement map of the PCB: click a part or a net and the viewer highlights where it is and what it connects to. Used together with the schematic to find test points.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| .pcb | .pcb board file | FlexBV or the viewer it was exported from |
| PDF schematic | any PDF reader; Sumatra PDF and Foxit handle large schematics well | |
| .rar | RAR archive | 7-Zip or WinRAR |
| .zip | ZIP archive | 7-Zip, WinRAR or the built-in Windows extractor |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
Questions
Which laptops use the LA-4111P board?
Files in the catalog link LA-4111P to the HP Compaq CQ40 and HP Pavilion DV4-1220US.
Who designed the LA-4111P board?
LA-4111P is a Compal board number used by HP.
Is there a boardview for LA-4111P?
Yes, 1 boardview file in .pcb format.
Where do the download links go?
Each button opens the original public Telegram post the file was shared in. ChambersDesignInc.com only indexes and cross-references those posts.